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解析几何中的定点、定角、定值问题,是高考考查的核心题型之一,是多年高考经久不衰的热点.这类问题常常以直线与圆锥曲线的位置关系为载体,以参数处理为核心需要,综合运用函数、方程、不等式、平面向量等诸多数学知识以及数形结合、分类讨论等多种数学思想方法求解.一般来说解法都比较单一,虽然有通法可循,但运算量大且过程繁琐是它最明显的特征.如何化繁为简,减少运算量、有效突破这一人人都颇感棘手的问题,
Analytic geometry in the fixed point, fixed angle, the value of the problem is one of the core problems in the college entrance examination test is the enduring multi-year college entrance examination hot spots. Such problems are often linear and conic position relationship as the carrier, parameter processing As the core needs of the comprehensive use of a variety of mathematical knowledge such as functions, equations, inequalities, plane vectors and mathematical combination of mathematical form, classification, discussion and other mathematical methods to solve .Generally speaking, the solution is relatively simple, though there are pass law, but the operation Large amount and complicated process is its most obvious feature.How to simplify, reduce the amount of computation, an effective breakthrough in this one everyone is quite thorny problem,